Solar Attic Fan Does It Work

But passive ventilation does not.

Solar attic fan does it work. How an attic fan works. Solar attic fans in. Even if you install it yourself and take the tax credit it could still take you 15 years or. Solar attic fans work with your existing passive vents.

Solar power is safer to use with an attic fan. For the attic fans to work at peak efficiency they need to be on a south facing roof slope if you live in the northern hemisphere. How does a solar powered attic fan work. The attic fan just helps the air move more which adds cooler air circulation.

Solar attic fans work by pulling in the cold air from the soffits and pushing out the hot air that has accumulated at the top of the attic. Danny s tests of solar attic fans showed that in florida where there s abundant solar energy yearly savings from installing two fans in a house with just over 1 000 square feet of air conditioned floor area amounted to only 460 kwh. Of attic and expels hot air from the attic quickly replacing it with cooler air from outside. Out of stock online.

An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic. If a cloud blocks the sunlight the fans slow or stop. Solar attic fans can be installed in just 15 minutes. Once the solar powered attic fan is up on the roof the sun works its magic to power the fan.

To determine the number of cubic feet per minute needed for a power vent fan multiply the number of square feet in your attic by 0 7. Solar powered attic vent fans usually don t move as many cubic feet of air per minute cfm as hardwired fans. Building codes require homes to have a passive vent system. A solar attic fan ideally delivers up to 400 cfm of venting power per 1000 sq.

The safety and effectiveness of an attic fan is a subject that is hotly debated but line powered products usually cost more to operate than they can produce in savings during the summer. A solar powered attic fan provides constant steady air flow throughout your attic. This is basically how air naturally moves. Master flow 500 cfm solar powered roof mount exhaust fan model prsolar 221 00 221.

These fans are designed to remove excess heat from your attic which in theory is supposed to lessen the load on the air conditioning in your home. If you ve ever been in your attic you know just hot the space can get especially in summer months. Depending on what your utility charges that s about 40 per year. Attic fans exhaust hot air from your attic to the outside.

As result stale warm air is vented out giving more room for fresh cool air also known as air exchange your attic should never be hotter than 10 25 above the outside air temperature in the summer time. Cold air is at the bottom and warm air is at the top. The sun beats down on the roof surface and heats up the stagnant air inside the attic.